Vacuum cleaning device.



H. B. MERTZ. VACUUM CLEANING DBVIOE. APPLICATION FILED JULY18, 1910.

1,062,837. Patented May 27, 1913.

2 SHEETS-SHEET 1.

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. H. B. MERTZ.

VACUUM CLEANING DEVICE.

APPLIQATION FILED JULY 18, I910.

Patented May 27, 1913 2 SHEETS-SHEET 2 HERMAN B. MERTZ, OF BEACH VIEW,PENNSYLVANIA.

VACUUM CLEANING DEVICE.

Specification of Letters Patent.

Patented May 2'7, 1913.

Application filed July 18, 1910. Serial No. 572,560.

To all whom it may concern:

Be it known that I, HERMAN B. lVIER'rz,

citizen of the United States, residing at Beach View, in the count ofAllegheny and State of Pennsylvania, ave invented certain new and usefulImprovements in Vacuum Cleaning Devices, of which the follow ing is aspecification.

This invention relates to improvements in suction cleaners and it hasfor its object to provide a light, durable and eflicient cleaner.

Another object is to provide a suction cleaner having means to provide acontinuous non-interrupted suction.

Another object is to provide a suction cleaner which will be very lightto operate.

With the above and other objects which will be described later, in view,I have coin structed the apparatus illustrated in the accompanyingdrawings, in which,

Figure 1 is a longitudinal sectional view of a suction cleaner, and Fig.2 is a side ele vation of a cleaning apparatus.

Like reference characters indicate like parts throughout the severalviews of the drawings and in the specification, in which 1 indicates adust collecting apparatus, consisting of a cylinder 2, mounted on a base3 by means of supporting members 4. The cylinder is provided with a pairof cone shaped heads 5 and 6 which have flanges 7' thereon and which aresecured to the flanges 8 on the cylinder through the medium of the bolts9; between the flanges are securely held the circumferential edges 10and 11 of the diaphragms 12 and 13 which have stifiening reinforcingplates 14 and 15. The device is divided into four separated compartmentsindicated by 16, 17, 18 and 19 respectively.

The compartment 19 is provided with an opening 20 through which a dustcollecting bag 21 (indicated by dotted lines) is inserted;

this opening is provided with a flared mouth 22 having a seat 23 formedthereon for the mouth of the bag 21 to rest upon, a rubber gasket 24 isalso seated on the seat 23, upon which the edges 25 of the top 26 restand form an air tight joint through the compression caused by the thumbnuts 27 operrpr'oper position.

ating on the bolts 28, which slip into forked projections 29 on the top.The top 26 is provided with an inlet pipe 30 to which a hose may beattached.

A rod 31 crosses the cylinder and is secured to the walls thereof, tothe central part of this rod is affixed a plate 32 which acts as abearing for one end of the spiral springs 33 and 34. The other end ofthe spring 33 always bears against the diaphragm 12 while the other endof the spring 34 does not normally contact said diaphragm, however itdoes come into contact therewith when the diaphragm is drawn toward therod 31, these springs then act in conjunction with one another to forcethe diaphragm outward. e

To the diaphragm 13 is secured a piston rod 35, through the medium ofthe nuts 36 and 37, this rod works in a bearing 38 which has a packingcap 39 thereon, through the medium of which the packing 40, which may bea lubricating packing, is forced against the rod. The other, end of therod is held by a socket 41 mounted on a pin 42 held by a rocking bar 43,on the lower end of which is a rocker 44, which rocks on the base 3. Abearing 45 is also mounted on the base and has a slot 46 therein inwhich the pin 47 (shown in dotted lines) secured to the rocker bar,works. This pin operates to allow a free rocking motion to the rockerbut at the same time keeps it always in its The upper end of the rockerbar is provided with a recess 48 into which fits a handle 49. Thisrocker arrangement keeps the piston rod in a horizontal line and makesthe machine work easily and without a hitch.

A curved tube 50 has one end51 resting on a tubular projection 52opening into compartment 19 and the other end 53 rests on the tubularprojection 54 between this tube and said projections are seated twovalves 55 and 56, these valves are held in place by the tube ends. Aboutthe center of the tube 50 is an air outlet 57. A bolt 58 is secured tothe top of this cylinder and passes directly through the tube 50, whichis held in place by the nut 59.

A tube 60 connects the compartments 18 and 19 and valves (not shown) arelocated in the mouth of the tube. An opening 61 also connects thecompartments 18 and 19 and a valve 62 is located therein. A guard 63protects the valve located at the mouth 64 of the tube 60.

In operation the handle 19 is drawn away from the machine as shown, this.action forces the air in compartment 17 out through the opening 57 inthe tube 50 via the valve 55 and draws the air from the compartment 19into the compartment 18 through the valve 62, tending to create a vacuumin compartment 19 which sucks in the diaphragm 12 and contracts thesprings 33 and 34 and the vacuum is further relieved by the suction ofair through the tube 30. This tube brings in the dirt and dust which iscollected into the porous bag 20. As soon as sufficient air entersthrough the tube 30 to compensate for that drawn from the compartment 19the tension of the springs 33 and 34 forces the diaphragm 12 back to itsnormal position thereby tending to again create a Vacuum in thecompartment 19, which is relieved by air being sucked in through thetube 30. On the reverse stroke of the handle the diaphragm 13 is forcedcenterward forcing the air in compartment 18 out through the opening 57in the tube 50 via the valve 56 and at the same time the tendency towarda vacuum in compartment 17 caused by the displacement of the diaphragmis relieved through the suction of air from compartment 19 thereinto,through the pipe 60 via the valve 63 in the mouth 64 thereof. Thiswithdrawal of air from compartment 19 again causes air to be sucked inthrough the tube 30 and again causes the operation of the diaphragm 12as above described.

It will be readily seen that the suction of air through the tube 30 iscontinuous and unbroken at any time during the movement of the handle.

Having described my invention, I claim as new and desire to secure byLetters Patent 1. A device of the kind described com-' ments andextending to a point spaced from the end of the cylinder, avalve-controlled pipe emptying at a point alining with said diaphragmand at another point adjacent said partition, into said last-namedcompartment, said pipe having an airport intermediate its open ends, adiaphragm secured in said other compartment and terminating short of theopposite end of said cylinder, an upright member in said last-namedcompartment, a spring secured to said member and holding said last-nameddiaphragm distended, means for establishing communica tion between saidcompartments, a removable cap at the top of said last-named compartmentarranged to clamp a bag depending in the latter, an air tubecommunicating with said last-named compartment, and emptying into saidbag, and means for reciprocating said first-named diaphragm.

'2. A device of the kind described comprising a casing having twointercommunicatable compartments, diaphragms in said compartmentsdisposed at the ends of said casing but spaced therefrom, fiat aircompressing members formed upon said diaphragm, one of said membersarranged to compress air in its compartment in both a forward andrearward stroke, means for causing said other member to move toward saidfirst-named member when the latter has moved forwardly, or rearwardly,an airinlet tube expanding air in said other compartment and arranged torestore said lastnamed member, a removable cap upon said casing clampinga bag depending into said last-named compartment and carrying said tube,and means for discharging the air exhausted by said first-named member.

3. In combination a casing divided into two compartments,valve-controlled means for establishing communication between saidcompartments, diaphragms disposed at the ends of said casings in saidcompartments, means for causing one of said diaphragms to exhaust theair in its compartment by a forward and rearward stroke, an air-inlettube in said other compartment, means for suspending a porous receptaclein said last-named compartment in registration with said tube, saidother diaphragm becoming active when said first-named diaphragm hasmoved, and means for carrying off the air exhausted by said first-nameddiaphragm.

4:. A device of the kind described comprising a casing, said casingbeing divided into two compartments, an inverted U- shaped pipe openingat the top at each end of one compartment and having a port opening intothe atmosphere, a diaphragm in said last-named compartment arranged toforce air out of either end of said pipe when it reciprocates, means forreciprocating said diaphragm, a post in said other compartment, a seconddiaphragm in said lastnamed compartment, variable tension springsattached to said post put under compression by said last-named diaphragmwhen said first diaphragm moves in either direction, an air-deliveringtube opening into the second compartment, a pipe connecting saidcompartments, having an airdelivering port opening into said first com-In testimony whereof I aflix my signapartment and an air-intake portopening ture, in presence of two Witnesses. into said secondcompartment, a valve con- HERMAN MERTZ trolling said 1ast-named port andopening only to admit air, and a tube establishing Witnesses:intercommunication between said two com- I. LUTHER RAUGK, partments. A.T. MERTZ.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). G.

